Photos: Bushes at Super Bowl LI

HOUSTON, TX - FEBRUARY 05: Former US President George H. W. Bush and former First Lady Barbara Bush look on prior to Super Bowl 51 between the New England Patriots and the Atlanta Falcons at NRG Stadium on February 5, 2017 in Houston, Texas. (Photo by Gregory Shamus/Getty Images)

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HOUSTON, TX - FEBRUARY 05: Former US President George H. W. Bush and former First Lady Barbara Bush look on prior to Super Bowl 51 between the New England Patriots and the Atlanta Falcons at NRG Stadium on February 5, 2017 in Houston, Texas. (Photo by Gregory Shamus/Getty Images)